Dynamo-generated turbulence and outflows from accretion discs

نویسنده

  • A. Brandenburg
چکیده

Local hydromagnetic simulations of accretion-disc turbulence currently provide the most convincing evidence that the origin of turbulence in discs could be the Balbus{ Hawley magnetorotational instability. The main results of such calculations are highlighted with particular emphasis on the generation of large-scale magnetic ­ elds. Comparison with mean-­ eld dynamo theory is made. This theory is then used to address the question of the launching and collimation of winds emanating from the disc surfaces.

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تاریخ انتشار 2000